How To Fix FDT_EXPRESSIONS057 - Data conversion conflict; mapping of &1 to &2

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_EXPRESSIONS - Formula & Derivation Tool: Expressions

• Message number: 057

• Message text: Data conversion conflict; mapping of &1 to &2

What causes this issue?

The parameter &v1& is not convertible to the mapped parameter &v2&.
<DS:TX.FDT_CONVERTIBILITY>FDT Data Object Convertibility</>

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Specify convertible parameters.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS057 - Data conversion conflict; mapping of &1 to &2 ?

  The SAP error message FDT_EXPRESSIONS057 indicates a data conversion conflict during the mapping process in SAP's Flexible Data Import (FDI) or Flexible Data Transfer (FDT) framework. This error typically occurs when there is an attempt to convert data from one format to another, and the conversion fails due to incompatible data types or formats.
  Cause:
  The error message FDT_EXPRESSIONS057 is triggered when:
  
  There is a mismatch between the source data type and the target data type during the mapping process.
  The source value cannot be converted to the target format due to incompatible data types (e.g., trying to map a string to a numeric field).
  The source data contains invalid or unexpected values that cannot be processed correctly.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Data Types: Review the data types of the source and target fields in your mapping configuration. Ensure that they are compatible. For example, if the target field is numeric, ensure that the source data can be converted to a number.
  
  
  Validate Source Data: Inspect the source data for any invalid or unexpected values that may cause conversion issues. Clean or transform the data as necessary to ensure it meets the expected format.
  
  
  Adjust Mapping Logic: If you are using expressions or transformations in your mapping, ensure that the logic correctly handles the data types. You may need to add conditions to handle specific cases or use conversion functions to explicitly convert data types.
  
  
  Test with Sample Data: Create a small sample of the source data that replicates the issue and test the mapping. This can help you identify the specific values causing the conflict.
  
  
  Review Documentation: Consult the SAP documentation for the FDT framework to understand the expected data types and any specific requirements for the fields involved in the mapping.
  
  
  Error Handling: Implement error handling in your mapping process to catch and log conversion errors, which can help in diagnosing issues in the future.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address known issues or provide additional guidance on handling data conversion conflicts.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they have found.
  FDT Documentation: Review the official SAP documentation for Flexible Data Transfer to understand the configuration options and best practices for data mapping.
  
  By following these steps, you should be able to identify the cause of the FDT_EXPRESSIONS057 error and implement a solution to resolve the data conversion conflict.